4+(−7) is 7 units from 4, in the negative direction (that is, to the left of 4)
Answer:
The given probability distribution is a discrete probability distribution.
Step-by-step explanation:
We are given the following in the question:
x: 3 4 7
P(X=x): 0.19 0.3 0.51
Property of discrete probability distribution:

If the given probability distribution satisfies this property then, it is a discrete probability distribution.

Thus, it satisfies the property for a discrete probability distribution.
Thus, the given probability distribution is a discrete probability distribution.
Answer:
28°C
Step-by-step explanation:
First you do 3*19=57°C
-5+57= 52°C
then you do 4*6=24 °C
as its being cooled you takeaway
52-24=28°C
The answer is 1 out of 10 (1/10)